They're still one of the greatest developers. I wouldn't even be bothered by it if they were mainly focusing their effort on, say, The Last of Us 3 and the remakes were more of a little side project for them.
Also to be fair, I do see the appeal in a remake of the first Uncharted since it's obviously the one that's aged the worst being a nearly 17 year old game that couldn't tap into the full potential of the PS3 like 2 and especially 3 would go on to do. If the remake of the first Uncharted sells well then of course they're going to try to do the same thing for the second and third games. It's an "If You Give A Mouse A Cookie" situation.
I think they tainted their reputation a little bit with the original release of tlou2 on Ps4. Not from a technical feat, but from a storytelling one. And I'm not speaking for myself personally, I didn't even play tlou2 myself because I had my own displeasures with it (the lack of a multiplayer mode, which in and of itself was announced to be canceled 3 years later anyway)
This industry has grown so used to remakes and remasters that one for Uc1 might look like it makes sense, but to me it just comes across as Sony and ND just not having very many ideas and looking for another cash grab. There isn't any request or fan demand for a Uc1 rerelease, and it already happened once last generation in 2015 when the original trilogy got remastered.
The last time I remember a remake announced which was one that the community actually really wanted was Demon's Souls. That one in particular to me did actually make sense, but a lot of other re-releases lately don't.
I remember back when a remake of tlou1 for Ps5 was just a rumor, and I'm pretty sure the rumor was founded from an internal leak of Sony emails. Something that had to do with Days gone as well, actually. And my thought then was the same as it is now, after a remake of tlou1 for Ps5 became a reality:
Was anyone really asking for a remake of tlou1? Not really, not from what I can tell. Has the game already been re-released before? Yes it has, it was remastered for Ps4 in 2014. Does it come off as a cash grab? Yes, and a successful one at that. From what I remember, it released as the full price of a brand new game this generation and also had its own controversy for lack of content.
All three questions have the exact same answers for a rumored remake of Uc1. Does there seem to be a lot of fan demand for a remake of Uc1? No. Has it already been re-released? Yes. Does it come off as a cash grab? Yes. It comes off as a trend Sony is starting for themselves because of the success that was the tlou1 remake.